Coway

Coway Airmega ProX

Ranked #7 in Air Purifiers

608 LP on the category ladder what's LP?

The ownership-safe big-room choice. Ranks below the smaller Coways only because its price narrows its audience.

Consolidated from 6 cited sources across 5 outlets

Where the cited sources landed, as we read them

5 positive sources
1 mixed source

See the sources

Check price

Pros & cons

✓ Big-room flagship with dual filters
✓ Same mechanical-design conservatism as the Mighty
✓ Ownership-safe large-room choice over pricier lifestyle brands
✓ Coway's US warranty support reputation is among the best in the category

✗ High price narrows its audience

The sources behind this ranking

We searched the web and YouTube for what has been published about this product, then read the articles, video transcripts and comments we found.

5 positive sources

Dadfficient Nigel Harry · reviewer · Jun 2026

The Coway Airmega ProX delivers a massive CADR of 462 CFM while suppressing internal bearing noise behind a heavy, dense outer plastic shell. This massive chassis physically dominates our heavy-duty acoustic tests for large master bedrooms by dropping its motor tone to a low, blunt hum.

Read H

HouseFresh Danny Ashton · reviewer · Jun 2026

The 350 completed our particle removal test in 17 minutes, which is four (4) minutes slower than the Coway Airmega ProX. Based on this performance, we estimate a PM1 CADR of 352 cfm, which can provide five air changes per hour in rooms up to 528 sq. ft.

Read B

Breathe Quality Brook D. · reviewer · May 2026

Airmega ProX leads at 99.773%. TruSens Z-6000 follows at 99.446%. LG PuriCare at 97.997%. Airdog X8 trails at 85.754% — its rated 470 cfm is discounted by the 0.387 TPA ionizer degradation factor, delivering 1.949 ACH at this room size.

Read T

Tom's Guide Article · Sept 2025

If you’re after the best air purifier that focuses purely on power and not so much aesthetic appeal or price, then the Coway Airmega ProX is worth a look.

Read H

HouseFresh Danny Ashton · reviewer · Dec 2025

The ProX is one of the best options for those looking for an air purifier to help with dust, pollen, pet allergens, or smoke in large spaces.

Read

1 mixed source

Consumer Reports Courtney Lindwall Home · reviewer · Oct 2019

The Airmega ProX does not ace our noise tests, but its scores are reasonable. It has an auto-sensor that can detect when air quality dips and kick into higher gear.

Read